3D Cursor and Resetting View in Quad View
In the Properties panel on the right (press N to toggle) you have the option to change the location of your 3D cursor.

If you are working in Quad view and want to center your cursor on this specific axis you can zoom out the regarding field:  


for the top/down view it would be the X and Y axis  
for the right/left view it would be the Z and Y axis  
for the front/back view it would be the Z and X axis  


If you have viewport projection set to orthographic then depending on the angle you could also shift the location of the cursor.

If you click on the surface of an object the cursor will be placed right on top of it.